1 Chapter 1Measurements 1.4 Prefixes and Equalities Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings

2 Metric and SI Prefixes

3 Indicate the unit that matches the description. 1. A mass that is 1000 times greater than 1 gram. 1) kilogram2) milligram 3) megagram 2. A length that is 1/100 of 1 meter. 1) decimeter2) centimeter 3) millimeter 3. A unit of time that is 1/1000 of a second. 1) nanosecond 2) microsecond 3) millisecond Learning Check

4 Indicate the unit that matches the description. 1. A mass that is 1000 times greater than 1 gram. 1) kilogram 2. A length that is 1/100 of 1 meter. 2) centimeter 3. A unit of time that is 1/1000 of a second. 3) millisecond Solution

5 Select the unit you would use to measure A. your height. 1) millimeters2) meters 3) kilometers B. your mass. 1) milligrams2) grams 3) kilograms C. the distance between two cities. 1) millimeters2) meters 3) kilometers D. the width of an artery. 1) millimeters2) meters 3) kilometers Learning Check

6 A. your height. 2) meters B. your mass. 3) kilograms C. the distance between two cities. 3) kilometers D. the width of an artery. 1) millimeters So lution

7 An equality states the same measurement in two different units. can be written using the relationships between two metric units. Example: 1 meter is the same as 100 cm and 1000 mm. 1 m= 100 cm 1 m= 1000 mm Metric Equalities

8 Measuring Length Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings

9 Measuring Volume Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings

10 Measuring Mass Several equalities can be written for mass in the metric (SI) system 1 kg = 1000 g 1 g = 1000 mg 1 mg = g 1 mg = 1000 µg Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings

11 Indicate the unit that completes each of the following equalities. A.1000 m = 1) 1 mm 2) 1 km2) 1 dm B g = 1) 1 mg 2) 1 kg2) 1 dg C.0.1 s = 1) 1 ms 2) 1 cs2) 1 ds D.0.01 m = 1) 1 mm 2) 1 cm2) 1 dm Learning Check

12 Indicate the unit that completes each of the following equalities. A. 2) 1000 m = 1 km B. 1) g = 1 mg C. 3) 0.1 s = 1 ds D. 2) 0.01 m = 1 cm Solution

13 Complete each of the following equalities. A. 1 kg = 1) 10 g2) 100 g 3) 1000 g B. 1 mm =1) m2) 0.01 m 3) 0.1 m Learning Check

14 Complete each of the following equalities. A. 1 kg = 1000 g (3) B. 1 mm = m (1) Solution